hmac - 如何在 Crystal-lang 中创建 HMAC

Question

见 OpenSSL::HMAC documentation .

我正在尝试这个:

require "openssl"

puts OpenSSL::HMAC.hexdigest(:sha256, "secret key", "data")

我收到此错误:

undefined constant OpenSSL::HMAC

其他 OpenSSL 方法工作正常，例如 OpenSSL::Digest.new("SHA256") .

我究竟做错了什么？

Answer 1

与 require "openssl" you don't require hmac .这对我有用:

require "openssl/hmac"

puts OpenSSL::HMAC.hexdigest(:sha256, "secret key", "data")